package com.example.mouther_bg.utils;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;

public class JWTUtils {
    private static final String SING="QWERTYU0916@#MNBVCXZ";

    /*
    * 生成token
    * */
    public static String getToken(Map<String, String> map){
        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.DATE,7);   //指定过期时间为7天
        JWTCreator.Builder builder = JWT.create();
        map.forEach((k,v)->{
            builder.withClaim(k,v);
        });
        String token = builder.withExpiresAt(instance.getTime())
                .sign(Algorithm.HMAC256(SING));
        return token;
    }

    /*
    * 验证token的合法性，并返回根据token查到的信息
    * */
    public static DecodedJWT verify(String token){
        DecodedJWT verify = JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
        return verify;
    }

}
